Definitions:

1. an adequate or large amount noun
   • The troops had a quantity of ammunition.
2. how much there is or how many there are of something that you can quantify noun
   • There was a quantity of three dozen eggs.
3. the concept that something has a magnitude and can be represented in mathematical expressions by a constant or a variable noun
   • Vectors have a quantity as well as a direction.

Synonyms:

• measure